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    <title>jQuery选择器筛选器练习</title>
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            <h1 class="c1">洋哥</h1>
            <h1 class="c1">带你学习jQuery</h1>
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                          role="button">查看更多</a></p></div>
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                        <button class="btn btn-danger">删除</button>
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                    <td>Egon</td>
                    <td>吹牛逼</td>
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                                jQuery一点都不难
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                                jQuery一学就会
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                                jQuery就要多练
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                                jQuery学不好
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                                我的心中只有学习
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                                学习真的太TM有意思了
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            <h2>练习题：</h2>
            <ol id="o1">
                <li>找到本页面中id是<code>i1</code>的标签</li>
                <li>找到本页面中所有的<code>h2</code>标签</li>
                <li>找到本页面中所有的<code>input</code>标签</li>
                <li>找到本页面所有样式类中有<code>c1</code>的标签</li>
                <li>找到本页面所有样式类中有<code>btn-default</code>的标签</li>
                <li>找到本页面所有样式类中有<code>c1</code>的标签和所有<code>h2</code>标签</li>
                <li>找到本页面所有样式类中有<code>c1</code>的标签和id是<code>p3</code>的标签</li>
                <li>找到本页面所有样式类中有<code>c1</code>的标签和所有样式类中有<code>btn</code>的标签</li>
                <p id="p2" class="divider"></p>
                <li>找到本页面中<code>form</code>标签中的所有<code>input</code>标签</li>
                <li>找到本页面中被包裹在<code>label</code>标签内的<code>input</code>标签</li>
                <li>找到本页面中紧挨在<code>label</code>标签后面的<code>input</code>标签</li>
                <li>找到本页面中id为<code>p2</code>的标签后面所有和它同级的<code>li</code>标签</li>
                <p id="p3" class="divider"></p>
                <li>找到id值为<code>f1</code>的标签内部的第一个input标签</li>
                <li>找到id值为<code>my-checkbox</code>的标签内部最后一个input标签</li>
                <li>找到id值为<code>my-checkbox</code>的标签内部没有被选中的那个input标签</li>
                <li>找到所有含有<code>input</code>标签的<code>label</code>标签</li>
            </ol>
        </div>
    </div>
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        <div class="col-sm-8 my-center">
            <p>写很少的代码，做很多的事。</p>
            <h4>所以说</h4>
            <p>学好jQuery真的很重要，学好jQuery真的很重要，学好jQuery真的很重要。</p>
        </div>
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